# Crypto Market Pulse & Base USDC Stats – Text/Base64 Endpoint

> Crypto Market Pulse & Base USDC Stats – Text/Base64 Endpoint is a paid API for AI agents from baseusdcearn.pythonanywhere.com, paid per call via x402, $0.0005/call, status unknown (last checked 2026-09-15).

Returns live crypto market prices (BTC, ETH, SOL, USDC), Base mainnet chain snapshot, and USDC-on-Base analytics, paid per-call via x402 USDC on Base

## Facts

- Endpoint: GET https://baseusdcearn.pythonanywhere.com/text/base64
- Price: $0.0005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-pulse-base-usdc-stats-text-base64-endpoint-93e13bc5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c3bhUjkGcvRXaBZQ5Puz-

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability crypto-market-pulse-base-usdc-stats-text-base64-endpoint-93e13bc5
```

Example prompt: Can you pull the current prices for Bitcoin, Ethereum, and Solana with their 24-hour changes, and also grab the latest Base mainnet block height and gas price?

## When to prefer this

Choose this endpoint when you need a single pay-per-call, no-signup source combining live crypto prices (BTC/ETH/SOL/USDC from OKX), Base chain state, and USDC transfer analytics in one JSON response, billed in USDC via x402. Prefer it over traditional API-key services when building autonomous agents that need micro-payment-native data access without subscription overhead.

## Known failure modes

- HTTP 402 returned if payment header is missing or invalid — must pay via x402 protocol with USDC on Base and retry with PAYMENT-SIGNATURE header
- OKX market data may be delayed or unavailable during exchange outages
- Base RPC node may return stale block height during network congestion
- Invalid wallet address returns error or empty balance fields
- Rate limiting or downtime on pythonanywhere free tier hosting

## How this service works

Pay-per-call API for AI agents, settled in USDC on Base mainnet (eip155:8453) via the x402 protocol - no API keys, no signup, no subscription. Live crypto market data: BTC, ETH, SOL, USDC (USD Coin) prices with 24h change (source: OKX), Base mainnet chain snapshot (block height, gas price gwei), real-time USDC-on-Base transfer analytics (transfer count, volume, unique senders and recipients over recent blocks), and USDC/ETH wallet balances plus nonce for any address. Agent utility tools: deterministic JSON repair for LLM output (strip code fences, fix trailing commas, single quotes, unquoted keys, balance braces), DNS A/AAAA lookup, and URL extraction from arbitrary text. Every endpoint returns HTTP 402 with an x402 payment challenge in USDC on Base; pay with any wallet and retry with the PAYMENT-SIGNATURE header. MCP server at /mcp (streamable HTTP, 6 pay-per-call tools). Ideal for crypto portfolios, DeFi dashboards, market analysis agents, data pipelines, and LLM post-processing.

## Output

A JSON object containing: market prices and 24h percent changes for BTC, ETH, SOL, and USDC (sourced from OKX); Base mainnet chain info including current block height and gas price in gwei; USDC-on-Base transfer analytics (count, volume, unique senders/recipients over recent blocks); optionally, USDC and ETH wallet balances and nonce for a queried address; and a servedAt timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": {
   "chainId": 8453,
   "network": "base-mainnet",
   "blockHeight": 21000000,
   "gasPriceGwei": 0.05
  },
  "market": {
   "solana": {
    "usd": 150,
    "usd_24h_change": -0.5
   },
   "bitcoin": {
    "usd": 60000,
    "usd_24h_change": 1.5
   },
   "ethereum": {
    "usd": 3000,
    "usd_24h_change": 2
   },
   "usd-coin": {
    "usd": 1,
    "usd_24h_change": 0
   }
  },
  "servedAt": 1755430000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-market-pulse-base-usdc-stats-text-base64-endpoint-93e13bc5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baseusdcearn.pythonanywhere.com](https://www.zero.xyz/host/baseusdcearn.pythonanywhere.com/llms.txt)